Cushion tire



T. c. MussEN March 16 cUHIoN TIRE Filed Nov. '7

I I I I I I I I INVENTUR.

Patented Mar. 16, 1926. i

THOMAS C. MUSSEN, OF TORONTO, ONTARIO, CANADA.

cUsHroNV Tina.

Application filed November To all'wzom it may concern Be it known that I, Tnon'as C. MUssnN, of the city of Toronto, in the county of York, Province of Ontario, Canada, a sub-' `iectof the King` of Great Britain, have invented f'certain new and useful Improvements in Cushion Ti'res, of which theV fol'- lowing` is a specification.

This invention relates to ztires in which the resiliency of the 'tire is due to the elas ticity'of suitably disposed solid material and my object isto provide a cheap, durable 'and etiicient tire adapted to be directly positioned on afelloel of the type ordinarily used withdetachable tire rims. o

I attain my object by means of a construction which may be briefiy describ'ed as follows. A metal rim of U-sectionis so shaped as to fit an ordinary felloe equipped forv the carrying of an ordinary detachable rim. .A bridge formed of'ai plurality of plies of fabric frictioned With rubber spans the opening of the rim, one or more of the plies of fabric exte'nding substantially to or around the felloe engaging side of the rim. A rubber tread and side walls are vulcanized to the fabric. A ring of substantially ini Fig. 4 a cross section of a double tire constructed in accordance with my invention.

In the drawings like numerals of reference indicate corresponding parts in thedifferent figures.

1 is a U-shaped metal rim, the channel being of considerable depth and the edges Curved inwardly and downwardly to form a rounded seat for the fabric bridge which the rim is adapted to carry. This rim is substantially continuous so that it possesses a considerable measure of rigidityiThe fabric bridge 2 is formed of a plurality of layers of frictioned canvas. One or .more of the layers of canvas extend substantially to the centre of the felloe-engagng side' of 7, 1924. serial No. 748,456.

the rim. Preferably the first ply of frietioned canvas is extended completely round the rim, the remainingplies progressively having` their edges at different distances from the centre line so that the bridge tapers in thickness from the edges to the felloeengaging lside of the tire. Care must be taken, however, that the fabric bridge has V sutfi'cient engagement with the outer side of 'the' rim to resist -the stresses to which the part of the bridge spanning the sides of the rim issubjected.

Over this cianvas bridge is applied a rubber 'tread 3 which may be of ordinary type 'and-providedvwith the'breaker strip a of fabric between the inner and outer sidesof its trea-d portion. This tread with its side walls isvulcanized to the outside of the'fal ric bridge. The centre 5 of the exterior surface of the tread is preferably raised somewhat as shown in order to concentrate the pressure over the portion of the bridge between the edges of the side walls of the U-shaped metal rim, thus securing to the fullest possible measure the resilient support of the bridge.

The outer surface of the U-shaped rim Vpneumatic or other cushion tires.

To protect the fabric and rubber at the felloe side of the rim, I may provide the rim with a protective band 10 of metal secured by rivets 11 to the rim.

.To further concentrate the load on the centre of the bridge where it spans the U- shaped rim, I provide, as shown in Fig. 2, an annular band 12 of relatively incompressible material, which is positioned over the centre of the bridge by means of asaddle 13 grooved to receive the band.l In this case one or more plies of frictioned fabric 14: extend over the band and saddle and are cemented 4or vulcanized to the .fabric of the bridge at the sides of the rim. This fabricV The state Within the rixn being;l cleseiy scnied, :1 ir may he torced thcrein under prcs- :nu'e to aid in niaintainino` or re-intorcing the reiiiency ot the bridge :ind trend.

Various niodiications of this construction :ire possible which :filii within the scepe o'f niy invention. For instance, two rnns and tiree construeted in occordimce with iny inrention inny he eecured together side by side as hon'n in Fi: 't und iitted on :in eI-:tre wide 'telioe such ne einployed on the Wi'ieei ot heavy dutjiv tii'nehs.

What I c eini ie l. The coi'nbinzition ot :i wheel 'feiloe a Ushzilied euhstiuitieii); continuous inctiii riin ndiipted to he poitiened on or reinoi'od troin the telioe; reiensuhle nie-nns tor leci-;rng theV rini on the eiioe; end o tire of ruhher find fahric biiiit up on the rim und bridging the opening' therein.

A U-shziped enbstantiaii7 continuous lnetni riin ndfipted tor detechzihle connection with :1 Wheel tciioe: fi bridge torincd :i piuruiity ot piies of tnhric i'i'ictioned With ruhher spnnning' the opening of the riin and udherint'; to one ;another end the outer sur- :ince o t the riin; and :i trend and side Walls of ruhher i'ulcunized to the outer surface ot the ahric.

3. A U-Shaped substzintiniiy continuous metal rini zidnpted tor detnchuhie connection With :1 Wheel telioe; u bridge 'torn'ied of a piurziiity ot piies of tzibric trictioned with ruhher pnnningr the opening ot the. i'iin und edherin'; to one :mother and the enter enrtace ot' the riin: a trend and side Walls of ruhher vulcanized to the enter surface of the tohrio; o ringl of rehitiveiy incoinpressihie mate 'itd ot less width than the opening' ot the i'iin and einhedded in the trend :idjucent the bridge udzipted to concentrnte trend preseure on the bridge; and a brcaker strip 'of t'ahric over said ring.

-:t-. A U-sheped substantiziily continuous metal 'riin adepted tor detachahie connection with :i Wheel teiioe; a bridge torinod of :i pluraliti7 ot piies of :tahric trictioned With ruhher spenning' the opening' of the rini and ndhering to one :mother and the outer surtace ot the riin: a tr=fid and side Walls of ruhher ruicanized to the outer Surface of the tnhric; :i sziddlc ot' ehistic n'mteriul seated on the in'idge: a ring' of rchitivciv incoinpreesihie n'mterizil ot less width than the opening ot the riin und fitted in the saddie :idzipted to coneentrate trend pressure on the bridge; and o breiiker strip ot ifehric over said ring.

U-shuped snhstuntinlly continuous metal riin edapted tor detuchabie connection with :1 Wheel telioe; :i bridge torined ot a plurziiity ot plies ot tzihrie frictoned with ruhher spunning the opening ef the riln :md zidhei'ingz to one another and the outer surface ot the riin; :i trend und side Walls ot riihher vuleanized to the enter sort-:ice ot the tnhric; a snddle of ehistio material scated on the bridge; a ringr of rchltiveiy incoinpressilde nioterizii et less width than the opening ot' the riin und sented in the snddle zidapted to concentrzite trend pressure on the bridge: and a fbric over said ring.

Sitncd :it Toronto, Canada, this 3rd day of Nov., 1924.

T. C. MUSSEN. 

